Shares of Dubai-listed construction company Arabtec Holding have lost nearly a quarter of their value since chief executive Hasan Ismaik abruptly resigned last month. The share price drop hasn’t won the company any plaudits from investors and fund managers for the way it disclosed information that could have shed more light on why Mr. Ismaik left and what the immediate future of the company holds.

Today at a press conference, Arabtec sought to put an end to the speculation that has surrounded the company by pledging a back-to-basics approach with renewed focus on the core construction business. But Arabtec’s chairman Khadem Al Qubaisi also struck a defiant tone and chided investors for trading on speculation rather than on sound analysis of the company.

“This market is not efficient. No one is reviewing the financial statements, no one is in touch with the analysts, no one reviews the strategy of the company and this is why at the end of the day they make a lot of wrong decisions,” said Mr. Qubaisi. “My advice to shareholders is to study the company,” he said.

Mr. Qubaisi also dismissed criticism that the company hasn’t properly disclosed information to the market, a position with which the Securities and Commodities Authority appeared to agree.

The SCA in a statement said ”it urges investors and clients to ignore the rumors and to follow the basic rules of sound trading on the markets as per the technical indices and basic analysis of securities on the markets.” It also said it didn’t suspend Arabtec’s shares because all companies listed currently on the stock market “play according to laid down rules of listing, disclosure and trading.”

Still, Mr. Qubaisi appeared to acknowledge that transparency was an issue the company needs to address.

“I can assure you that the transparency will improve a lot in Arabtec in the next few months. For me transparency is very important and we need to be transparent with shareholders,” he said.

Arabtec’s share price has already recovered slightly since it announced it would hold a press conference, indicating better transparency and disclosure could be well something that investors know how to value.